HP Printer network connection question.

English Network/Internet
1

We have an HP networked printer with static IP address and connected to a subnet.

My computer is on a different subnet and I have not enabled any routing between these subnets.

I set up my own printer using Yast and it seems that using HP tool I can also connect to the HP printer on the other subnet.

The current connection for the “remote” HP printer is shown as hp:/net/HP_Laserjet_600_M602?ip=<printer’s static address>

What is routing for this traffic and how does it work. Has it punched a hole through my security or is it routed via wan?

Not had to do this before so would like to understand.

2

You are only talking about what you think the routing is in the system. But you do not show anything.We really do not believe such talking without computer prove.

ip route
3

Actually I was attempting to ask a general question about how the hp-setup tool works since I did not need to open ports or set permitted protocols on my firewall. The connection was made very simply by hp-setup and once I input the IP of the subject printer, the printer was found and installed and it just works.

Perhaps somebody on the forum is familiar with HP tools and will know. I certainly do not have the skills or knowledge to analyse the routing. Using the suggested command on my laptop, which also has the printer working gives the following:-

alastair@localhost:~> ip route 
default via 192.168.xxx.xxx dev wlp3s0 proto dhcp metric 600  
192.168.xxx.xxx/25 dev wlp3s0 proto kernel scope link src 192.168.xxx.xxx metric 600  
alastair@localhost:~>

No clues there.

4

When that is true, there can not be any network traffic between both systems.

5 
192.168.xxx.xxx

To mask the IP does not help, 192.168.x.y is an private IP does not get routed to the Internet.
So you must not mask it…

6

My conclusion has been that the connection is routed via WAN and HP. I am just trying to understand how this works.

7

There is a connection through the GW etc.

I am not troubleshooting here, the connection works like a dream. I am just trying to understand the underlying hp-setup tool. Too clever for me by far.